JPS6453240A - Evaluating microprocessor - Google Patents

Evaluating microprocessor

Info

Publication number
JPS6453240A
JPS6453240A JP63116593A JP11659388A JPS6453240A JP S6453240 A JPS6453240 A JP S6453240A JP 63116593 A JP63116593 A JP 63116593A JP 11659388 A JP11659388 A JP 11659388A JP S6453240 A JPS6453240 A JP S6453240A
Authority
JP
Japan
Prior art keywords
microprogram
microprocessor
evaluating
ram
selector
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP63116593A
Other languages
Japanese (ja)
Inventor
Haruhisa Kashiwagi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEC Corp filed Critical NEC Corp
Priority to JP63116593A priority Critical patent/JPS6453240A/en
Publication of JPS6453240A publication Critical patent/JPS6453240A/en
Pending legal-status Critical Current

Links

Landscapes

  • Debugging And Monitoring (AREA)
  • Test And Diagnosis Of Digital Computers (AREA)

Abstract

PURPOSE:To cope with different types of microprograms with use of a single evaluating microprocessor by providing a RAM to an evaluating microprocessor chip to store a microprogram and changing the microprogram from outside. CONSTITUTION:A microprogram storing RAM 1, an address selector 2, a data selector 3, a status selector 4 and an AND circuit 5 are provided in addition to the same hardware as that of a microprocessor including a microsequencer 11. Furthermore a microprogram address input terminal 6 is provided together with a microprogram data input/output terminal 7, a microprogram status input terminal 8, and a microprogram access permission terminal 9. In such a constitution, a microprogram can be written into the RAM 1 from outside of an evaluating microprocessor. Thus it is not required to produce an independent evaluating microprocessor for each microprogram.
JP63116593A 1987-05-15 1988-05-13 Evaluating microprocessor Pending JPS6453240A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63116593A JPS6453240A (en) 1987-05-15 1988-05-13 Evaluating microprocessor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP11972087 1987-05-15
JP63116593A JPS6453240A (en) 1987-05-15 1988-05-13 Evaluating microprocessor

Publications (1)

Publication Number Publication Date
JPS6453240A true JPS6453240A (en) 1989-03-01

Family

ID=26454897

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63116593A Pending JPS6453240A (en) 1987-05-15 1988-05-13 Evaluating microprocessor

Country Status (1)

Country Link
JP (1) JPS6453240A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02242437A (en) * 1989-03-16 1990-09-26 Hitachi Ltd Emulator
JPH0310323A (en) * 1989-06-07 1991-01-17 Mitsubishi Electric Corp Microprocessor
JPH0338734A (en) * 1989-07-05 1991-02-19 Nec Corp Evaluation chip
JPH0397744U (en) * 1990-01-23 1991-10-08

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58144272A (en) * 1982-02-19 1983-08-27 Sony Corp Digital signal processor
JPS60186934A (en) * 1984-03-05 1985-09-24 Nec Corp Integrated circuit
JPS6184738A (en) * 1984-10-02 1986-04-30 Nec Corp Integrated circuit device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58144272A (en) * 1982-02-19 1983-08-27 Sony Corp Digital signal processor
JPS60186934A (en) * 1984-03-05 1985-09-24 Nec Corp Integrated circuit
JPS6184738A (en) * 1984-10-02 1986-04-30 Nec Corp Integrated circuit device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02242437A (en) * 1989-03-16 1990-09-26 Hitachi Ltd Emulator
JPH0310323A (en) * 1989-06-07 1991-01-17 Mitsubishi Electric Corp Microprocessor
JPH0338734A (en) * 1989-07-05 1991-02-19 Nec Corp Evaluation chip
JPH0397744U (en) * 1990-01-23 1991-10-08

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